190516-N-OP638-074 PORT HUENEME, Calif. (May 16, 2019) Research engineers and program managers from the NASA Armstrong Flight Research Center take a guided tour of the Self-Defense Test Ship at Naval Surface Warfare Center, Port Hueneme Division (NSWC PHD). The NASA Armstrong team is at NSWC PHD to establish a partnership in developing fiber optic sensing systems. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jesse L. Gonzalez/Released)